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It is common knowledge that the past few years have been tough for the steel industry. The contraction in expenditure on substantial local infrastructure and mining projects in particular has challenged the industry. Hot dip galvanizers within the Southern African region as well as our associate and affiliated partners have not been immune to this contraction.

We have however seen a shift in the landscape. Further opportunities are developing in parallel with traditional applications of hot dip galvanizing. New markets are arising in areas such as in the rejuvenation of existing infrastructure. Also the increase in the use of steel not only as the primary medium of construction but also as material for achieving decorative and aesthetic features is gaining traction. The advent of solar parks and other renewable energy developments is being seen as the ‘new’ industrial revolution. Many medium and small enterprises, renowned for adaptability and resilience, in South Africa have chosen to embrace these new opportunities. By embracing these new applications and markets, opportunities for learning and development exists.

The awards submissions clearly demonstrated the level of innovation, engineering excellence and project management which we are capable of achieving. An exciting aspect in many

of the awards submissions were the comments about team work and integration of design team efforts; fabrication skills, hot dip galvanizing and duplexing process controls, which were shared from project inception. This resulted in the delivery of excellent “finished products” as showcased by the projects on display in this edition.

A heartfelt thanks to the team at the Association who collected, collated and presented these projects to the judges. A big thank you also to the judges who gave freely of their time and who had the unenviable task of dissecting excellence to determine category and overall winners.

Very importantly, thanks to the entrants. The submissions of projects for the awards provides the Association with an opportunity to showcase excellence in our industry. This translates into opportunities for the marketing of hot dip galvanizing to designers, architects, engineers and fabricators and to sensitize these decision makers of the wide variety of applications for hot dip galvanizing and duplex coatings.

I am confident that our members and their business partners will continue to participate enthusiastically in this initiative to showcase and grow our industry. Congratulations to all our
participants and well done to the winners. Hot Dip Galvanizing Today places on record and celebrates all the projects, their challenges, solutions and the teamwork that delivered excellent results.

Robin Clarke

The winners of the 2016 Hot Dip Galvanizing Awards are as follows (listed according to categories):

Duplex Category Winner and Overall Winner of the Walter Barnett Trophy

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The Kirstenbosch Treetop Walkway (“The Boomslang”)

The Kirstenbosch Botanical Gardens Tree Canopy Walkway or ‘The Boomslang is situated between the Protea Garden, Cycad Amphitheatre, the Dell, Mathews Rockery and the Concert Lawn. The walkway takes the visitor from the forest floor into and through the trees and bursts out above the canopy, giving spectacular panoramic vistas of the surrounding mountains, Garden and Cape Flats.

This 130m long slender walkway discretely snakes its way through the canopy of indigenous trees almost invisible in the way its natural lines blend with the vegetation. The walkway is crescent-shaped and takes advantage of the sloping ground; it touches the forest floor in two places, and raises visitors to over 11.5m above ground. While being wheelchair-accessible visitors in wheelchairs will need assistance to negotiate the steep gradients to get to the walkway.

The Centenary Tree Canopy Walkway was built to celebrate the centenary of the Kirstenbosch Botanical Gardens established in 1913.

For further information on this project please view The Hot Dip Galvanizing Today Magazine – Volume 13 Issue 3 or simply download to read at your convenience.

Rejuvenation Projects Category Winner

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The SANDF Military Health Base Depot

The new Medical Health Depot Base was built in response to the Department of Defence’s requirements for a more secure and larger modern base to ensure the effective operational preparedness of medical supplies for the Medical Health Service of the National Defence Force of South Africa (SANDF).

A SANDF property, with several existing buildings on a site of 64 571m² in Thaba Tshwane was selected. A number of the existing buildings on site were identified as being of significant heritage value and the decision to retain them as rejuvenated elements of the new design was made.

For further information on this project please view The Hot Dip Galvanizing Today Magazine – Volume 13 Issue 3 or simply download to read at your convenience.

Infrastructure Category Winner

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The Uzizi Bridges Project – Tugela Ferry, KZN

The Uzizi pedestrian bridge is a permanent structure over the Tugela River erected to create a safe crossing point for the local community. The local community used to have to cross the river using twenty litre buckets in to which put their clothes and using this as a ‘pontoon’ floated alongside the buckets across the river. The children who attended school had to use the same routine on a daily basis to get to the school on the opposite bank of the Tugela.

The Uzizi Bridge consists of two mass gravity concrete anchors. The cables of this magnificent structure are supported by two concrete piers and four columns each six metres in height. The cables span the 120 metres between the piers and support the hot dip galvanized deck superstructure. Two hot dip galvanized steel ramps with supporting concrete columns allow for safe access and egress of the bridge.

For further information on this project please view The Hot Dip Galvanizing Today Magazine – Volume 13 Issue 3 or simply download to read at your convenience.

Joint Architectural Category Winner

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The New Tram Street Offices, Pretoria

The new Tram Street offices in Nieuw Muckleneuk, Pretoria made excellent use of hot dip galvanizing to improve the architectural environmental impact through hot dip galvanized modular building elements in a soft suburban node. Hot dip galvanized steel was used as the key binding other materials into a coherent whole. The strong and lightweight material required no additional paint finishing or maintenance thereby providing obvious financial and environmental advantages. Combined with its use in high or hard to reach places
hot dip galvanizing’s advantages over other finishes was clearly the correct decision.

While the building is inland where the elements would not be exposed to an excessively harsh environment, the use of a hot dip galvanizing was used as a means to ensure that the building remains inexpensive and easy to maintain over the long term. Furthermore the hot dip galvanized steel provided designers with a lightweight structure to resolve aesthetic issues relating to sun control and covered spaces for pedestrians and vehicles. All hot dip galvanized steel elements were designed in modular sections, with due consideration given to the sizes of hot dip galvanizing baths available in the region, for ease of erection and storage on site.

For further information on this project please view The Hot Dip Galvanizing Today Magazine – Volume 13 Issue 3 or simply download to read at your convenience.

Joint Architectural Category Winner

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The Nelson Mandela Metropolitan University’s South Campus Student Housing

Located within two kilometres of the Indian Ocean and exposed to the prevailing winds, it was vital that all mild steel components be adequately corrosion protected to ensure their durability. The obvious choice to perform this task was hot dip galvanizing, which further enhanced the “raw” quality present in the choice of materials used throughout the facilities.

Galvanized mild steel has been used so extensively and effectively, as an integral design element of this project, proving that galvanizing mild steel provides more than merely corrosion control. The vast amount of galvanized mild steel used in the project – columns, balustrades, staircases, bridges, balconies and pergolas – is very noticeable upon approaching and navigating through the precinct and provides an integral and highly visible expression of the value of hot dip galvanizing in a corrosive coastal environment.

For further information on this project please view The Hot Dip Galvanizing Today Magazine – Volume 13 Issue 3 or simply download to read at your convenience.

Duplex Category Highly Commended

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The Port of Saldanha Landing Platforms

The elevating landing platforms located on along extended gangway are critical to allow for embarking and disembarking of the serving personnel of the iron ore carriers mooring at the Port of Saldanha.

In 2008 the “dust mitigation” project was successfully implemented in Saldanha where the iron ore conveyer system was enclosed with roof canopy frames. A duplex coating system was used on these frames where hot dip galvanizing and a suitable paint system had great success.

A duplex system was specified requiring the condition of the surface to meet at least RE2 on the European scale of degree of rust, after 10 years in an environment of frequent salt spray, chemicals and polluted coastal atmosphere.

The synergistic effect of Duplex coatings, by using appropriate paint systems with hot dip galvanizing provided a life expectancy of corrosion control of 1.5 times greater than that of the individual finishes life expectancy added together.

The financial benefits of reduced maintenance and extending replacement intervals are just as important as benefit of minimising environmental impact in ports.

For further information on this project please view The Hot Dip Galvanizing Today Magazine – Volume 13 Issue 3 or simply download to read at your convenience.

Infrastructure Category Highly Commended

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Port of Richards Bay Floating Break Water Berth 208

The bulk liquid berth, Berth 208 in the Port of Richards Bay shares the border with the eChwebeni Natural Heritage site. eChwebeni is a significant conservation area consisting of an ecologically sensitive mangrove ecosystem. Increased shoreline erosion and the deposition of sand by high tidal waters immediately landward of the eroded zone along the shoreline were identified. To mitigate this, the authorities commissioned the construction of a breakwater spanning 660m between Berth 208 and the identified shore zone.

The breakwater is constructed of floating pontoons anchored to ocean floor. Each 15m long, 5m wide pontoon consists of reinforced concrete incorporating hot dip galvanized steel reinforcement. Hot dip galvanized 12mm reinforcing was fixed around the top and sides of the pontoon prior to casting of concrete.

To ensure an extended service life of the pontoons and to control future maintenance costs it was specified that all reinforcing used must be Hot Dip Galvanized. The application of hot dip galvanized reinforcing in concrete has been shown to extend the service life of a concrete structure by 4 to 6 times, providing a maintenance free service life in excess of 35 years.

For further information on this project please view The Hot Dip Galvanizing Today Magazine – Volume 13 Issue 3 or simply download to read at your convenience.

CLICK HERE TO VIEW THE 2016 HOT DIP GALVANIZING AWARDS GALLERY

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To position the Hot Dip Galvanizers Association of Southern Africa, comprising all its Members and other interested parties, as a professional organization serving the interests of all parties dependent upon the hot dip galvanizing industry. To develop and expand the demand for hot dip galvanizing, identify and develop new market opportunities for the benefit of Members and other Stakeholders.

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